Mason Investment Advisory Services, Inc.

In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 14, 2026), Mason Investment Advisory Services, Inc. reported 79 stock positions worth $2.2 billion. Its top holding was iShares MSCI USA Value Facto (VLUE) at 30.5% of the portfolio, followed by Avantis US Small Cap Value (AVUV, 14.5%) and Vanguard Ftse All Wo X-US SC (VSS, 12.8%). Compared with Q4 2025, it opened 3 new positions, sold out of 4, added to 31 and reduced 25. The biggest buy was a new position in Avantis Total Equity ETF (AVTM) and the biggest sale Vanguard Ftse All Wo X-US SC (VSS, shares −2%).

Most Recent 13F
Q2 2026
Location
RESTON, VA
CIK
0001635007
Portfolio Value
$2.2B (Q1 2026)
SEC Filing
0001140361-26-021278 ↗ filed May 14, 2026

Holdings Value

0$1.0B$2.0B$3.0B Q1 2024: $1.4B Q1 2024 Q2 2024: $1.6B Q2 2024 Q3 2024: $1.7B Q3 2024 Q4 2024: $1.7B Q4 2024 Q1 2025: $1.7B Q1 2025 Q2 2025: $1.8B Q2 2025 Q3 2025: $2.0B Q3 2025 Q4 2025: $2.1B Q4 2025 Q1 2026: $2.2B $2.2B Q1 2026 Q2 2026: $2.6B Q2 2026

Holdings 79 stocks · $2.2B
VLUE iShares MSCI USA Value Facto 30.50% 4,644,885 $660.5M Reduce -1.0%
AVUV Avantis US Small Cap Value 14.45% 2,833,098 $313.0M Reduce -0.4%
VSS Vanguard Ftse All Wo X-US SC 12.82% 1,905,214 $277.8M Reduce -1.7%
AVDV Avantis Intl S/C Value ETF 10.88% 2,360,214 $235.7M Reduce -2.3%
AVSC Avantis US Small Cap Equity 10.32% 3,585,892 $223.4M Reduce -0.6%
TGRT T. Rowe Price Growth ETF 10.19% 5,616,586 $220.8M Add +4.2%
VBR Vngrd Mrngst SL-CP Val ETF-U 2.84% 283,035 $61.5M Reduce -0.8%
CGDV Cap Group Dividend Value filed as CAPITAL GROUP DIVIDEND VALUE 1.58% 803,438 $34.2M Add +1.8%
MINT PIMCO Enhanced Short Maturit 1.29% 278,155 $28.0M Reduce -7.7%
CGXU Cap Group Intl Focus filed as CAPITAL GROUP INTL FOCUS EQT 1.11% 811,694 $23.9M Add +14.8%
CGGR Cap Group Growth Equity 0.68% 365,075 $14.7M Add +28.4%
AVTM Avantis Total Equity ETF 0.44% 204,758 $9.6M New
DFAT Dimensional US Target Value 0.35% 120,255 $7.5M Add +0.0%
VNQI Vanguard GLBL Ex-US Real Est 0.33% 160,127 $7.1M Reduce -0.1%
SPY SS SPDR S&P 500 ETF Trust-US 0.16% 5,251 $3.4M Reduce -0.0%
XOM Exxon Mobil Corp. 0.13% 16,274 $2.8M Reduce -0.1%
EFV iShares MSCI Eafe Value ETF 0.11% 33,071 $2.5M No change
FNDF Schwab Fndmn Intl LRG Co. ETF 0.10% 44,934 $2.2M No change
CVX Chevron Corp. 0.10% 10,257 $2.1M Add +0.1%
VUG Vanguard Mrngstar GR ETF-Sui 0.08% 4,163 $1.8M Add +149.1%
DFAC Dimensional US Core Equity 2 0.07% 38,485 $1.5M Reduce -1.0%
VGSH Vanguard Short-Term Treasury 0.07% 25,246 $1.5M Add +0.6%
AAPL Apple Inc. 0.06% 4,968 $1.3M Reduce -1.3%
AOA iShares Core 80/20 Aggressiv 0.05% 13,444 $1.2M Add +17.4%
EZM Wisdomtree US Midcap Fund 0.05% 17,434 $1.2M No change
VDE Vanguard Energy ETF 0.05% 6,667 $1.2M Add +2.1%
MDY State Street SPDR S&P Midcap 0.05% 1,758 $1.1M No change
VTI VG Morningstar TS MKT ETF-US 0.05% 3,294 $1.1M Add +0.3%
SPYM Ste STR SPDR PT S&P 500 ETF 0.05% 12,988 $994K No change
VIG Vanguard Dividend Apprec ETF 0.04% 4,459 $959K Add +0.2%
SPYV SS SPDR P S&P 500 Value ETF 0.04% 16,634 $941K Add +0.1%
SCZ iShares MSCI Eafe Small-Cap 0.04% 11,818 $927K No change
GNR State Street SPDR S&P Global 0.04% 11,857 $885K No change
VTV Vanguard Mrngstr Val ETF-Aui 0.04% 4,203 $825K Add +13.5%
MSFT Microsoft Corp. 0.04% 2,158 $799K Add +1.2%
VTEB Vanguard Tax-Exempt Bond ETF 0.04% 15,319 $764K Add +13.5%
IWF iShares Russell 1000 Growth 0.03% 1,766 $753K No change
VNQ Vanguard Real Estate ETF 0.03% 8,147 $723K Reduce -2.2%
ACI Albertsons Cos Inc. Class A 0.03% 42,219 $719K Add +0.8%
IVV iShares Core S&P 500 ETF 0.03% 1,090 $712K Reduce -6.0%
VXF Vanguard Extended Market ETF 0.03% 3,250 $669K Add +0.1%
VYM Vanguard High DVD Yield ETF 0.03% 4,384 $649K Reduce -3.9%
VAW Vanguard Materials ETF 0.03% 2,804 $632K Reduce -0.1%
ANET Arista Networks Inc. 0.03% 4,955 $608K Reduce -13.9%
VV Vngrd Mrgstr LRG-Cap ETF-Usd 0.02% 1,782 $533K Reduce -16.1%
GOOG Alphabet Inc. Class C 0.02% 1,856 $532K Reduce -17.6%
VOO Vanguard S&P 500 ETF 0.02% 831 $497K Reduce -2.4%
IJH iShares Core S&P Midcap ETF 0.02% 7,319 $494K Add +0.0%
GOOGL Alphabet Inc. Class A 0.02% 1,534 $441K Reduce -23.3%
IWD iShares Russell 1000 Value E 0.02% 2,022 $432K Reduce -42.7%
COST Costco Wholesale Corp. 0.02% 427 $426K No change
IWR iShares Russell Mid-Cap ETF 0.02% 4,288 $417K Add +0.0%
VCIT Vanguard Int-Term Corporate 0.02% 4,517 $374K Add +0.6%
TIP iShares Tips Bond ETF 0.02% 3,266 $360K Add +0.3%
AMZN Amazon.com Inc. 0.02% 1,670 $348K Add +2.6%
DLN Wisdomtree US Largecap Divid 0.02% 3,738 $334K No change
VYMI Vanguard Int High DVD YLD Inc. 0.02% 3,514 $331K No change
SCHP Schwab U.S. Tips ETF 0.02% 12,310 $328K Reduce -0.7%
XLE SS Energy Select Sector 0.01% 5,317 $326K Reduce -12.6%
IQDG Wisdomtree Intl QLTY DVD GRW 0.01% 7,748 $311K No change
VEA Vanguard Ftse Developed ETF 0.01% 4,823 $309K Add +0.2%
ITOT iShares Core S&P Total U.S. 0.01% 2,138 $304K No change
JULW Alianzim US Eq BFR20 Jul-Usd 0.01% 7,685 $298K No change
HD Home Depot Inc. 0.01% 819 $269K Add +3.7%
IUSV iShares Core S&P U.S. Value 0.01% 2,620 $268K No change
GWX State Street SPDR S&P Intern 0.01% 6,221 $263K No change
LLY Eli Lilly & Co. 0.01% 285 $262K Add +5.6%
GLDM SPDR Gold Minishares Trust 0.01% 2,774 $257K No change
SCHH Schwab US REIT ETF 0.01% 11,165 $240K No change
V Visa Inc. Class A 0.01% 792 $239K Add +0.6%
PYZ Invesco Dorsey Wright Basic 0.01% 1,931 $231K Add +0.1%
INGR Ingredion Inc. 0.01% 2,051 $231K Add +8.6%
BRK.B Berkshire Hathaway Inc. Class B 0.01% 481 $230K Reduce -1.4%
TURF T Rowe Price Nat Res ETF 0.01% 6,367 $223K New
INTU Intuit Inc. 0.01% 503 $217K Add +8.6%
IWY iShares Russell Top 200 Grow 0.01% 828 $206K No change
TSM Taiwan Semiconductor-SP ADR 0.01% 601 $203K New
VTES Vanguard SH Term Tax-Ex Bond 0.01% 1,979 $200K Add +0.5%
PGEN Precigen Inc. 0.00% 10,000 $39K No change

Portfolio Sells Q4 2025 → Q1 2026
VSS Vanguard Ftse All Wo X-US SC Reduce -1.7% 12.82% −0.35
MINT PIMCO Enhanced Short Maturit Reduce -7.7% 1.29% −0.14
IWO iShares Russell 2000 Growth Sold out 0.00% −0.03
VBR Vngrd Mrngst SL-CP Val ETF-U Reduce -0.8% 2.84% −0.03
VNQI Vanguard GLBL Ex-US Real Est Reduce -0.1% 0.33% −0.02
IWD iShares Russell 1000 Value E Reduce -42.7% 0.02% −0.02
IWM iShares Russell 2000 ETF Sold out 0.00% −0.01
SPY SS SPDR S&P 500 ETF Trust-US Reduce -0.0% 0.16% −0.01
VEU Vanguard Ftse All-World Ex-U Sold out 0.00% −0.01
JPM JPMorgan Chase & Co. Sold out 0.00% −0.01
GOOGL Alphabet Inc. Class A Reduce -23.3% 0.02% −0.01
GOOG Alphabet Inc. Class C Reduce -17.6% 0.02% −0.01
ANET Arista Networks Inc. Reduce -13.9% 0.03% −0.01
VV Vngrd Mrgstr LRG-Cap ETF-Usd Reduce -16.1% 0.02% −0.01
AAPL Apple Inc. Reduce -1.3% 0.06% −0.01
IVV iShares Core S&P 500 ETF Reduce -6.0% 0.03% −0.00
DFAC Dimensional US Core Equity 2 Reduce -1.0% 0.07% −0.00
VOO Vanguard S&P 500 ETF Reduce -2.4% 0.02% −0.00
VNQ Vanguard Real Estate ETF Reduce -2.2% 0.03% −0.00
VYM Vanguard High DVD Yield ETF Reduce -3.9% 0.03% −0.00
BRK.B Berkshire Hathaway Inc. Class B Reduce -1.4% 0.01% −0.00
SCHP Schwab U.S. Tips ETF Reduce -0.7% 0.02% −0.00
VAW Vanguard Materials ETF Reduce -0.1% 0.03% +0.00
XLE SS Energy Select Sector Reduce -12.6% 0.01% +0.00
XOM Exxon Mobil Corp. Reduce -0.1% 0.13% +0.03
VLUE iShares MSCI USA Value Facto Reduce -1.0% 30.50% +0.05
AVDV Avantis Intl S/C Value ETF Reduce -2.3% 10.88% +0.11
AVSC Avantis US Small Cap Equity Reduce -0.6% 10.32% +0.26
AVUV Avantis US Small Cap Value Reduce -0.4% 14.45% +0.69

Portfolio Buys Q4 2025 → Q1 2026
AVTM Avantis Total Equity ETF New 0.44% +0.44
CGXU Cap Group Intl Focus Add +14.8% 1.11% +0.11
CGGR Cap Group Growth Equity Add +28.4% 0.68% +0.08
VUG Vanguard Mrngstar GR ETF-Sui Add +149.1% 0.08% +0.05
CVX Chevron Corp. Add +0.1% 0.10% +0.02
VDE Vanguard Energy ETF Add +2.1% 0.05% +0.01
TURF T Rowe Price Nat Res ETF New 0.01% +0.01
TSM Taiwan Semiconductor-SP ADR New 0.01% +0.01
DFAT Dimensional US Target Value Add +0.0% 0.35% +0.01
AOA iShares Core 80/20 Aggressiv Add +17.4% 0.05% +0.01
VTV Vanguard Mrngstr Val ETF-Aui Add +13.5% 0.04% +0.00
VTEB Vanguard Tax-Exempt Bond ETF Add +13.5% 0.04% +0.00
INGR Ingredion Inc. Add +8.6% 0.01% +0.00
PYZ Invesco Dorsey Wright Basic Add +0.1% 0.01% +0.00
VEA Vanguard Ftse Developed ETF Add +0.2% 0.01% 0.00
IJH iShares Core S&P Midcap ETF Add +0.0% 0.02% −0.00
TIP iShares Tips Bond ETF Add +0.3% 0.02% −0.00
IWR iShares Russell Mid-Cap ETF Add +0.0% 0.02% −0.00
VTES Vanguard SH Term Tax-Ex Bond Add +0.5% 0.01% −0.00
HD Home Depot Inc. Add +3.7% 0.01% −0.00
VCIT Vanguard Int-Term Corporate Add +0.6% 0.02% −0.00
ACI Albertsons Cos Inc. Class A Add +0.8% 0.03% −0.00
SPYV SS SPDR P S&P 500 Value ETF Add +0.1% 0.04% −0.00
VXF Vanguard Extended Market ETF Add +0.1% 0.03% −0.00
LLY Eli Lilly & Co. Add +5.6% 0.01% −0.00
VGSH Vanguard Short-Term Treasury Add +0.6% 0.07% −0.00
AMZN Amazon.com Inc. Add +2.6% 0.02% −0.00
V Visa Inc. Class A Add +0.6% 0.01% −0.00
VIG Vanguard Dividend Apprec ETF Add +0.2% 0.04% −0.00
VTI VG Morningstar TS MKT ETF-US Add +0.3% 0.05% −0.00
INTU Intuit Inc. Add +8.6% 0.01% −0.00
MSFT Microsoft Corp. Add +1.2% 0.04% −0.01
CGDV Cap Group Dividend Value Add +1.8% 1.58% −0.06
TGRT T. Rowe Price Growth ETF Add +4.2% 10.19% −1.13

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 84$2.6BVLUE, AVUV, VSS, AVSC, TGRT
Q1 2026 79$2.2BVLUE, AVUV, VSS, AVDV, AVSC
Q4 2025 80$2.1BVLUE, AVUV, VSS, TGRT, AVDV
Q3 2025 80$2.0BVLUE, AVUV, VSS, TGRT, AVDV
Q2 2025 74$1.8BVLUE, VSS, AVUV, TGRT, AVDV
Q1 2025 74$1.7BVLUE, AVUV, VSS, TGRT, AVDV
Q4 2024 71$1.7BVLUE, AVUV, VSS, TGRT, AVSC
Q3 2024 73$1.7BVLUE, AVUV, VSS, TGRT, AVSC
Q2 2024 73$1.6BVLUE, AVUV, VSS, TGRT, AVSC
Q1 2024 67$1.4BVLUE, AVUV, VSS, AVSC, AVDV